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Stop Damper

a technology of stop and damper, which is applied in the direction of door/window fittings, multi-purpose tools, construction, etc., can solve the problems of increasing the friction of the piston, and achieve the effect of improving the braking

Inactive Publication Date: 2009-06-04
KARL SIMON GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010]It is one object of this invention to provide an end stop damper of the type mentioned above but which has an improved braking effect.

Problems solved by technology

In the process, it comes to rest against the interior wall of the cylinder and thus increases the friction of the piston.

Method used

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Examples

Experimental program
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Embodiment Construction

[0059]An end stop damper with a linearly extending damper body 10 is represented in FIG. 1. The damper body 10 forms a cylinder 11. The cylinder 11 surrounds a reception chamber 11.1, in which a piston 43 of a sliding element 40 is maintained in a linearly displaceable manner.

[0060]A spring guidance device 14 projects into the reception chamber 11.1 which is formed in one piece on a bottom 13 of the damper body 10 in the shape of a hollow cylinder. The spring guidance device 14 has an opening 16 in the form of a bore in the area of or near a side facing away from the bottom 13. The opening 16 creates a spatial connection between the reception chamber 11.1 and an air guidance channel 15, which is surrounded by the spring guidance device. Here, the diameter of the opening is 11.1 and the air guidance channel 15 possible. In place of the bore it is also possible to realize any arbitrary other opening cross section.

[0061]Good damping results are achieved if the cross-sectional surface o...

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PUM

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Abstract

A stop damper including a damper member with a cylinder. A piston is moveably guided inside a receiving space of the cylinder. The cylinder has a sliding surface against which the piston rests with a sealing element. A braking force that acts upon the piston can be applied using the air pressure generated in the receiving space because the piston is displaced, the receiving space being connected to the environment via an air-conducting connection to reduce the air pressure. In order to improve the braking effect of the sliding element, the sealing element of the piston and the sliding surface of the cylinder can contact each other in at least some areas via a defined rubbing surface geometry, the peak-to-valley height of the sliding surface being <1 μm and the peak-to-valley height of the facing surface of the sealing element being=4.5 μm in at least some areas.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]This invention relates an end stop damper with a damper body having a cylinder, wherein a piston is displaceably guided inside a reception chamber of the cylinder, the cylinder has a sliding surface against which the piston rests with a sealing element, wherein as a result of the displacement of the piston, a braking force acting on the piston can be exerted by the air pressure formed in the reception chamber, and for releasing the air pressure, the reception chamber is connected with the surrounding space via an air guidance connection.[0003]2. Discussion of Related Art[0004]An end stop damper is known from German Patent Reference DE 103 13 659 B3. The end stop damper has a cylinder, in which a piston is guided in a linearly displaceable manner. In this case, the piston is sealingly conducted on the interior wall of the cylinder, so that two pressure chambers are formed inside the cylinder.[0005]In the course of retrac...

Claims

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Application Information

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IPC IPC(8): E05F5/10
CPCY10T16/62F16F7/09
Inventor BANTLE, ULRICHESCHLE, JURGEN
Owner KARL SIMON GMBH & CO KG